Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-30-2018, 08:43 PM   #1
TF Site Team/Forum Founder
 
Baker's Avatar
 
City: League City, Tx
Vessel Name: Floatsome & Jetsome
Vessel Model: Meridian 411
Join Date: Oct 2007
Posts: 7,332
Sonic anti fouling

Has anyone used this technology? I think PYI has a system termed "Sonihull". Just wondering if there is anyone out there that has any experience with this.
__________________
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B...Sold
Meridian 411...T-Cummins 450C
Baker is offline   Reply With Quote
Old 10-30-2018, 08:56 PM   #2
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Join Date: Oct 2007
Posts: 16,565
Greetings,
Mr. B. I think the topic of sonic type anti-foul has been discussed. IMO the resident TF expert is Mr. fstbottoms. (Hope I'm remembering correctly).
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 10-30-2018, 08:58 PM   #3
Guru
 
oscar's Avatar
 
City: Bethlehem, PA
Vessel Name: Lady Kay V
Vessel Model: 1978 Hatteras 53MY
Join Date: Oct 2015
Posts: 1,098
It has been discussed for decades. And no one I know uses it.
__________________
https://ladykay.blog/
oscar is offline   Reply With Quote
Old 10-30-2018, 09:01 PM   #4
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Join Date: Oct 2007
Posts: 16,565
Greetings,
Mr.o. Aw, gee. Cut Mr. B some slack. He probably hasn't been paying attention....


__________________
RTF
RT Firefly is offline   Reply With Quote
Old 10-30-2018, 09:29 PM   #5
TF Site Team/Forum Founder
 
Baker's Avatar
 
City: League City, Tx
Vessel Name: Floatsome & Jetsome
Vessel Model: Meridian 411
Join Date: Oct 2007
Posts: 7,332
Quote:
Originally Posted by oscar View Post
It has been discussed for decades. And no one I know uses it.
I am well aware that I am not aware of anyone who uses it. It still does not answer my question. Does it work? Or maybe it works but it is prohibitively expensive??? I will search.
__________________
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B...Sold
Meridian 411...T-Cummins 450C
Baker is offline   Reply With Quote
Old 10-31-2018, 06:46 AM   #6
Guru
 
firstbase's Avatar
 
City: Jupiter, Florida
Vessel Name: Black Eyed Susan
Vessel Model: Grand Banks 42' Classic
Join Date: Nov 2016
Posts: 1,644
Here are the two big one..this is something that I really want to work and check back on every so often. Info/results never seem to change though...

http://www.trawlerforum.com/forums/s...ner-28404.html

http://www.trawlerforum.com/forums/s...ling-1489.html
__________________
Hal
BLACK EYED SUSAN
Grand Banks 42 Classic
firstbase is offline   Reply With Quote
Old 10-31-2018, 09:13 AM   #7
TF Site Team/Forum Founder
 
Baker's Avatar
 
City: League City, Tx
Vessel Name: Floatsome & Jetsome
Vessel Model: Meridian 411
Join Date: Oct 2007
Posts: 7,332
Thanks Hal. I did search and saw those. Sounds like snake oil to me.
__________________
Prairie 29...Perkins 4236...Sold
Mainship Pilot 30...Yanmar 4LHA-STP...Sold
Carver 356...T-Cummins 330B...Sold
Meridian 411...T-Cummins 450C
Baker is offline   Reply With Quote
Old 10-31-2018, 09:23 AM   #8
Guru
 
twistedtree's Avatar
 
City: Vermont
Join Date: Jan 2013
Posts: 10,092
Sonic anti fouling

I have heard from one or two people who thought maybe it worked. But not conclusive.

A friend was about to install one covering only a portion of his boat to see how it works. Sounds like the only way to get an objective assessment. But the results won’t be available for a while..... not even sure he did it. Will need to check.
__________________
MVTanglewood.com
twistedtree is offline   Reply With Quote
Old 10-31-2018, 11:25 AM   #9
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
Join Date: Oct 2011
Posts: 28,149
Boy, there is one person here who will tell you that fstbottoms is a hack for his judgement on Sonic cleaners (they don't really work in his expert opinion)... But others point to limited success.

RickB who I trust with all things marine says at least some applications work. Now .....size of vessel, system bought, how the boat is used, bottom paint, etc...etc all would have to be factored in.

My vote is like most peoples, if it worked so well, why don't at least all the rich, knowledgeable people use them?

I can understand the new boaters and poor guys like me who will dive and scrape not using them...... But guys who go to the best yards and could actually buy those yards and their opinions aren't flocking to the ultrasonic tech.
psneeld is online now   Reply With Quote
Old 10-31-2018, 11:34 AM   #10
Senior Member
 
Retriever's Avatar
 
City: Seattle, WA
Vessel Name: Akeeva
Vessel Model: Nordhavn 50
Join Date: Apr 2014
Posts: 449
I spent a few hours with a PYI rep last week talking about Sonihull and going through the installation on a friends boat. The rep had some compelling photos and testimonials from the USCG and Kvichak. Unfortunately we won't know how well it's working on this boat until it gets back to the tropics.

Another friend installed a different ultrasonic system (he might chime in on this thread) and reported good results.

I'm still toying with installing the system this winter, but I'm not sure it really addresses a problem for me...I'm already getting 3 years out of bottom paint and underwater fouling hasn't been a problem with a diver checking/cleaning things a couple times a year. The diver needs to be down there to check/change zincs anyway, so cleaning through hulls and running gear isn't much extra work.
Retriever is offline   Reply With Quote
Old 10-31-2018, 11:36 AM   #11
Guru
 
City: Melbourne, FL
Join Date: Dec 2014
Posts: 1,731
Ok, How about TF'er JustBob who has it installed on his new Hampton. Although it has low hours, he probably can offer an opinion.
stubones99 is offline   Reply With Quote
Old 10-31-2018, 12:44 PM   #12
Guru
 
oscar's Avatar
 
City: Bethlehem, PA
Vessel Name: Lady Kay V
Vessel Model: 1978 Hatteras 53MY
Join Date: Oct 2015
Posts: 1,098
Quote:
Originally Posted by Baker View Post
I am well aware that I am not aware of anyone who uses it. It still does not answer my question. Does it work? Or maybe it works but it is prohibitively expensive??? I will search.
I should have said: "It's been around for decades"...... My point was that if it REALLY worked EVERYONE would be using it, as 10 years of bottom paint at $120+ per gallon plus hauling plus labor would offset it at almost any price....

It's one of those things we WANT to work.... like the anti aging cream I keep slapping on my face...or that "wealth manager" that keeps calling me...
__________________
https://ladykay.blog/
oscar is offline   Reply With Quote
Old 10-31-2018, 02:35 PM   #13
Senior Member
 
JustBob's Avatar
 
City: Bainbridge Island
Vessel Name: Mahalo
Vessel Model: 2018 Hampton Endurance 658
Join Date: Apr 2016
Posts: 497
Quote:
Originally Posted by stubones99 View Post
Ok, How about TF'er JustBob who has it installed on his new Hampton. Although it has low hours, he probably can offer an opinion.
Yes I haven't hauled out nor had a diver so unknown at this point.

Why wouldn't they work? The guy that sold me said it was a boat size version of this:
Attached Thumbnails
sonicare.jpg  
__________________
JustBob
www.mvmahalo.com
JustBob is offline   Reply With Quote
Old 10-31-2018, 04:42 PM   #14
CEC
Senior Member
 
City: SF
Join Date: Apr 2018
Posts: 125
An independent test for this is real easy. Just get a 15' cat without paint. Now put one transducer in one of the pontoons and not in the other. Now put it in the water for a month or two depending on where you are and then have a look. Leave the antifouling paint out of the equation. Yeah its says you need it, but if it works, it should inhibit growth in a noticeable way on gel coat between one pontoon and the other over x time. If not, its not working. If so, I'd buy it.


This is such a simple test study. I don't see it having been done anywhere so far (publicly anyways). If I owned the company, the first thing I would have done is run that test, and I'd have photos all over the internet showing/documenting the results if it worked well. I see no real world tests - nothing..


The reality that there's no simple test studies like this readily available on their site after 10+ years tells me a whole lot.


Show us the money!
CEC is offline   Reply With Quote
Old 10-31-2018, 05:32 PM   #15
Guru
 
twistedtree's Avatar
 
City: Vermont
Join Date: Jan 2013
Posts: 10,092
Quote:
Originally Posted by CEC View Post
An independent test for this is real easy. Just get a 15' cat without paint. Now put one transducer in one of the pontoons and not in the other. Now put it in the water for a month or two depending on where you are and then have a look. Leave the antifouling paint out of the equation. Yeah its says you need it, but if it works, it should inhibit growth in a noticeable way on gel coat between one pontoon and the other over x time. If not, its not working. If so, I'd buy it.


This is such a simple test study. I don't see it having been done anywhere so far (publicly anyways). If I owned the company, the first thing I would have done is run that test, and I'd have photos all over the internet showing/documenting the results if it worked well. I see no real world tests - nothing..


The reality that there's no simple test studies like this readily available on their site after 10+ years tells me a whole lot.


Show us the money!


This is the test a friend is doing, I think. But it’s important to install forward and not aft (or vice versa) on the hull or side of the hull. Depending on sun exposure, growth can be dramatically different on one side of a boat vs the other, and you wouldn’t want that credited to the sonic magic when it’s just the sun.
__________________
MVTanglewood.com
twistedtree is offline   Reply With Quote
Old 10-31-2018, 05:38 PM   #16
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Join Date: Oct 2007
Posts: 16,565
Greetings,

Saint tt. I wish your friend success but $2K to $3K is out of MY price range for a "test". As Mr. CEC mentions, show me the $$ AND the photographic evidence.
Do any of these companies offer a complete money back guarantee? I didn't think so.
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 10-31-2018, 06:18 PM   #17
Senior Member
 
Wood's Avatar
 
City: Portsmouth, NH
Vessel Name: Irony
Vessel Model: Bayliner 4588
Join Date: Mar 2016
Posts: 121
Quote:
Originally Posted by Baker View Post
Has anyone used this technology? I think PYI has a system termed "Sonihull". Just wondering if there is anyone out there that has any experience with this.

This link is a technical paper on the efficacy of this technology. Testing was performed under controlled conditions. It was inconclusive - but, in my opinion, shows promise. Some commercial implementations may very well be snake oil and without unbiased testing seems like a crap shoot. The equipment does not seem too difficult to build into a system though for relatively short money.



https://www.google.com/url?sa=t&rct=...s04_LQ&cad=rja


"The relative effectiveness of the acoustic antifouling tri-
als was also often difficult to evaluate. It was often said
that fouling “inhibition” had occurred or that the surfaces
were “relatively free” of fouling. However, without a
baseline such terms become ambiguous. Often no con-
trol was used and generally little quantitative information
was provided on the amount of accumulated biofouling
that occurred. Very little photographic documentation of
the biofouling trials was found."
__________________
Irony
Bayliner 4588
Portsmouth, NH
Wood is offline   Reply With Quote
Old 10-31-2018, 06:45 PM   #18
Senior Member
 
Waterford's Avatar
 
City: Olympia WA
Vessel Name: Waterford
Vessel Model: Nordic Tug 37
Join Date: Jan 2013
Posts: 191
My marina here in south Puget Sound seems to grow mussels in the thru-hulls. I installed the unit from Australia on my Nordic Tug 32 two years ago and they never grew back. Further, my diver was amazed when he inspected the hull after a little over a year. I recently purchased an older NT 37 and just ordered the same system for it. Although my experience is limited to my own application in my own environment, I would have to say that it works. I stayed with the Australian brand only because I know it worked on my previous boat.
Waterford is offline   Reply With Quote
Old 10-31-2018, 07:25 PM   #19
Guru
 
twistedtree's Avatar
 
City: Vermont
Join Date: Jan 2013
Posts: 10,092
Quote:
Originally Posted by RT Firefly View Post
Greetings,

Saint tt. I wish your friend success but $2K to $3K is out of MY price range for a "test". As Mr. CEC mentions, show me the $$ AND the photographic evidence.
Do any of these companies offer a complete money back guarantee? I didn't think so.

That's "Mr Saint TT, to you, my friend :-)


I've never looked into them myself, let alone far enough to get pricing. Just glad someone else is doing it, not me. Hopefully we will all get some good info out of it.


I suppose I should go check to see if he actually did it. Last we spoke he was hauled out and debating with himself. But I do recall that they are installed from the inside of the hull, so easy to install, and easy to remove as well.
__________________
MVTanglewood.com
twistedtree is offline   Reply With Quote
Old 11-01-2018, 10:35 AM   #20
CEC
Senior Member
 
City: SF
Join Date: Apr 2018
Posts: 125
If you have a cored hull the install is not so simple. I'm thinking even once installed correctly on a cored hull the results would be even more iffy. Even if the test is biased and performed by the company making it, that would be something at least.
The theory about how and why it "works" that's on the website is fodder to me. Seems they did "testing" on it not hurting your hull layup ext., so why in the world would they not have done testing on the functionality!
CEC is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 06:18 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012